diff --git a/roots.cpp b/roots.cpp
index e747473..69c98fc 100644
--- a/roots.cpp
+++ b/roots.cpp
@@ -274,7 +274,11 @@
     }
 
     if (strcmp(v->fs_type, "ext4") == 0) {
+#ifdef USE_EXT4
         int result = make_ext4fs(v->device, v->length, volume, sehandle);
+#else
+        int result = 0;
+#endif
         if (result != 0) {
             LOGE("format_volume: make_extf4fs failed on %s\n", v->device);
             return -1;